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authorTao Bao <tbao@google.com>2018-06-25 21:11:53 +0200
committerTao Bao <tbao@google.com>2018-06-25 22:39:33 +0200
commit92f339372c236d3b84188489417df2d65550b1c4 (patch)
treee8d0fffbf6a5dddcfcae035517fb5fb8ec6580a9 /updater
parentupdater: Add Command parsing codes. (diff)
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Diffstat (limited to '')
-rw-r--r--updater/commands.cpp25
1 files changed, 16 insertions, 9 deletions
diff --git a/updater/commands.cpp b/updater/commands.cpp
index 6d4b5310b..fb19ebc9a 100644
--- a/updater/commands.cpp
+++ b/updater/commands.cpp
@@ -54,7 +54,7 @@ bool Command::ParseTargetInfoAndSourceInfo(const std::vector<std::string>& token
const std::string& tgt_hash, TargetInfo* target,
const std::string& src_hash, SourceInfo* source,
std::string* err) {
- // We expect the given tokens parameter in one of the following formats.
+ // We expect the given args (in 'tokens' vector) in one of the following formats.
//
// <tgt_ranges> <src_block_count> - <[stash_id:location] ...>
// (loads data from stashes only)
@@ -65,10 +65,9 @@ bool Command::ParseTargetInfoAndSourceInfo(const std::vector<std::string>& token
// <tgt_ranges> <src_block_count> <src_ranges> <src_ranges_location> <[stash_id:location] ...>
// (loads data from both of source image and stashes)
- // At least it needs to provide three parameters: <tgt_ranges>, <src_block_count> and
- // "-"/<src_ranges>.
+ // At least it needs to provide three args: <tgt_ranges>, <src_block_count> and "-"/<src_ranges>.
if (tokens.size() < 3) {
- *err = "invalid number of parameters";
+ *err = "invalid number of args";
return false;
}
@@ -170,6 +169,11 @@ Command Command::Parse(const std::string& line, size_t index, std::string* err)
if (op == Type::ZERO || op == Type::NEW || op == Type::ERASE) {
// zero/new/erase <rangeset>
+ if (pos + 1 != tokens.size()) {
+ *err = android::base::StringPrintf("invalid number of args: %zu (expected 1)",
+ tokens.size() - pos);
+ return {};
+ }
RangeSet tgt_ranges = RangeSet::Parse(tokens[pos++]);
if (!tgt_ranges) {
return {};
@@ -178,8 +182,9 @@ Command Command::Parse(const std::string& line, size_t index, std::string* err)
target_info = TargetInfo(kUnknownHash, tgt_ranges);
} else if (op == Type::STASH) {
// stash <stash_id> <src_ranges>
- if (pos + 2 > tokens.size()) {
- *err = "missing stash id and/or source ranges";
+ if (pos + 2 != tokens.size()) {
+ *err = android::base::StringPrintf("invalid number of args: %zu (expected 2)",
+ tokens.size() - pos);
return {};
}
const std::string& id = tokens[pos++];
@@ -191,8 +196,9 @@ Command Command::Parse(const std::string& line, size_t index, std::string* err)
stash_info = StashInfo(id, src_ranges);
} else if (op == Type::FREE) {
// free <stash_id>
- if (pos + 1 > tokens.size()) {
- *err = "missing stash id in free command";
+ if (pos + 1 != tokens.size()) {
+ *err = android::base::StringPrintf("invalid number of args: %zu (expected 1)",
+ tokens.size() - pos);
return {};
}
stash_info = StashInfo(tokens[pos++], {});
@@ -211,7 +217,8 @@ Command Command::Parse(const std::string& line, size_t index, std::string* err)
} else if (op == Type::BSDIFF || op == Type::IMGDIFF) {
// <offset> <length> <srchash> <dsthash>
if (pos + 4 > tokens.size()) {
- *err = "invalid number of tokens";
+ *err = android::base::StringPrintf("invalid number of args: %zu (expected 4+)",
+ tokens.size() - pos);
return {};
}
size_t offset;